Anti-skid adjusting device for boarding ladder

Abstract

The invention relates to the technical field of boarding ladders, and discloses a boarding ladder antiskid adjusting device which comprises a boarding ladder assembly, the boarding ladder assembly comprises a supporting bearing frame, a limiting frame is fixedly mounted on the outer surface of the supporting bearing frame, and a first sliding seat is slidably mounted on the outer surface of the limiting frame; and a ship ladder frame is rotationally mounted at the top of the first sliding seat. As the ship ladder assembly slides towards the supporting and bearing frame, the pedal is always in the horizontal position on the outer surface of the rotating rod, in the boarding process, no matter how the gradient of the ship ladder assembly changes, the pedal is kept horizontal so that a boarding person can stably walk on the pedal, and the risk of falling down is reduced; as the included angle between the ship ladder frame and the first connecting seat is gradually reduced, the non-slip mat at the top of the stress plate is limited by the limiting groove to gradually rise to the outer surface of the pedal, when the slope of the ship ladder frame is increased, the friction force between the non-slip mat and the sole of a boarding person is enhanced, the non-slip performance of the pedal is improved, and the safety of the boarding person in the boarding process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of boarding ladders, and particularly to an anti-slip adjustment device for a boarding ladder. Background Art

[0002] With the development of the shipbuilding industry, the requirements for the safety, convenience, and adaptability of boarding facilities are getting higher and higher. When boarding a ship at a dock, a boarding ladder is used. Whether it is a large cargo ship, a cruise ship, or other types of ships, when docking at docks of different heights, this boarding ladder can quickly and stably adjust to a suitable height, and provide a safe anti-slip and stable walking guarantee for boarding personnel during the boarding process.

[0003] However, there are still many defects in boarding ladders with similar structures during actual use. For example, existing boarding ladders may often adopt relatively simple fixed structures or only have very limited height adjustment capabilities. For example, some boarding ladders may only have a few fixed height gears. When the dock height is between these gears, it cannot be accurately matched. At the same time, the anti-slip design of the pedals of existing boarding ladders is often relatively simple. It may only have some simple anti-slip patterns engraved on the pedal surface. However, this single anti-slip measure cannot provide enough friction under harsh weather conditions, such as when the pedal surface is wet with rain or frozen, which easily causes boarding personnel to slip. Therefore, it is necessary to design an anti-slip adjustment device for a boarding ladder. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an anti-slip adjustment device for a boarding ladder.

[0005] The present invention is implemented by the following technical solutions: An anti-slip adjustment device for a boarding ladder, including a ship ladder assembly. The ship ladder assembly includes a support and bearing frame. A limit frame is fixedly installed on the outer surface of the support and bearing frame. A first sliding seat is slidably installed on the outer surface of the limit frame. A ship ladder frame is rotatably installed on the top of the first sliding seat. A rotating rod is fixedly installed inside the ship ladder frame. A second mounting seat is fixedly installed on the outer surface of the ship ladder frame. Further included are: A lifting assembly. The lifting assembly includes a guide rod. A connecting block is sleeved on the outer surface of the guide rod. A lifting platform is fixedly installed on the outer surface of the connecting block. The lifting platform is fixedly installed inside the second mounting seat; A support assembly. The support assembly includes a first connecting seat rotatably installed on the outer surface of the ship ladder frame. A second sliding seat is fixedly installed at the bottom of the first connecting seat through a first telescopic plate. A mounting rod is fixedly installed inside the first connecting seat. A second connecting seat is fixedly installed on the outer surface of the mounting rod. A connecting rod is fixedly installed at the bottom of the second connecting seat. A stress gear is rotatably installed inside the connecting rod. A second telescopic plate is slidably installed inside the second connecting seat; Anti-slip adjustment assembly, the anti-slip adjustment assembly includes a pedal rotatably mounted on the outer surface of a rotating rod, and an anti-slip pad is slidably mounted inside the pedal.

[0006] As a further improvement of the above solution, a first mounting seat is fixedly installed on the top of the first sliding seat, a ship ladder frame is rotatably installed inside the first mounting seat, and a protective guardrail is fixedly installed on the top of the ship ladder frame.

[0007] Through the above technical solution, the setting of the first mounting seat provides a rotation support point for the ship ladder frame, enabling the ship ladder frame to rotate stably on the top of the first sliding seat. The protective guardrail is installed on the top of the ship ladder frame, providing protection for boarding personnel and preventing people from accidentally slipping from the side during the boarding process, improving the safety of the boarding process.

[0008] As a further improvement of the above solution, a servo motor is fixedly installed on the outer surface of the support and bearing frame, a threaded cylinder is rotatably installed inside the support and bearing frame, a threaded push rod is threadedly connected inside the threaded cylinder, the outer surface of the threaded push rod is fixedly installed at the bottom of the first sliding seat, and a worm gear is fixedly installed on the outer surface of the threaded cylinder.

[0009] Through the above technical solution, when the threaded cylinder is driven to rotate by the servo motor, the threaded push rod can generate an axial movement, thereby driving the movement of the ship ladder frame and realizing the adjustment of the height of the ship ladder frame. The worm gear is fixedly installed on the outer surface of the threaded cylinder, providing a basis for the subsequent meshing transmission with the worm, and is an important part of realizing the lifting of the lifting platform.

[0010] As a further improvement of the above solution, a transmission chain is sleeved and meshed with the output end of the servo motor, the transmission chain is sleeved on the outer surface of the threaded cylinder on the side away from the servo motor, and a worm is fixedly installed at the bottom of the lifting platform, and the worm meshes with the worm gear.

[0011] Through the above technical solution, when the worm gear rotates, the worm will generate a linear movement, thereby driving the lifting platform to rise or fall, realizing the precise adjustment of the height of the lifting platform to meet the requirements of different wharf heights.

[0012] As a further improvement of the above solution, a first telescopic plate is fixedly installed at the bottom of the first connecting seat, a second sliding seat is fixedly installed at the bottom of the first telescopic plate, and the second sliding seat is slidably installed on the outer surface of the limit frame.

[0013] Through the above technical solution, the second sliding seat is slidably mounted on the outer surface of the limiting frame, providing guidance and support for the first connecting seat and its connecting components, and ensuring the stability of the entire structure during movement. At the same time, the second telescopic plate is slidably mounted inside the second connecting seat, enabling the compactness and coordination of the structure when the relevant components move.

[0014] As a further improvement of the above solution, a pedal is fixedly mounted on the inner wall of the second telescopic plate. The pedal is rotatably mounted on the outer surface of a rotating rod. A driving rack is fixedly mounted on the outer surface of the pedal, and the driving rack meshes with a force-bearing gear.

[0015] Through the above technical solution, when the angle between the ship ladder frame and the first connecting seat changes, the driving rack can drive the force-bearing gear to rotate, thereby realizing the relevant adjustment actions of the pedal, ensuring that the pedal remains horizontal when the slope of the ship ladder frame changes, and guaranteeing the smooth walking of boarding personnel.

[0016] As a further improvement of the above solution, a limiting groove is formed inside the pedal. An anti-slip pad is slidably mounted inside the limiting groove. A force-bearing plate is fixedly mounted at the bottom of the anti-slip pad. A force-bearing rack is fixedly mounted on the outer surface of the force-bearing plate, and the force-bearing rack meshes with the force-bearing gear.

[0017] Through the above technical solution, when the force-bearing gear rotates, it can drive the force-bearing rack to rise, and then the anti-slip pad rises to the outer surface of the pedal under the limitation of the limiting groove, improving the anti-slip performance of the pedal and guaranteeing the safety of boarding personnel during the boarding process.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, when the servo motor is started, it drives the transmission chain to rotate, and then the threaded cylinder rotates. The ship ladder frame slides towards the support and bearing frame, and the height of the ship ladder frame decreases. When the boarding ladder is not needed, this structure can make the boarding ladder occupy less space and is convenient for storage. Moreover, when the servo motor drives the threaded cylinder to rotate, the worm wheel on the outer surface of the threaded cylinder rotates accordingly. Since the worm wheel meshes with the worm, the rotation of the worm wheel causes the worm to produce a linear motion. The worm is fixedly mounted at the bottom of the lifting platform, and the lifting platform is sleeved on the outer surface of the guide rod through a connecting block and is limited. Therefore, the rise of the worm will drive the lifting platform to rise. Different dock heights may vary. This structure can adjust the height of the lifting platform according to the actual dock height, enabling the boarding ladder to better meet the requirements of different dock heights.

[0019] As the ship ladder frame slides towards the support and bearing frame, the pedal always remains in a horizontal position on the outer surface of the rotating rod. During the boarding process, regardless of how the slope of the ship ladder frame changes, the horizontal pedal allows boarding personnel to walk steadily on the pedal, reducing the risk of falling. Moreover, as the angle between the ship ladder frame and the first connecting seat gradually decreases, the driving rack on the outer surface of the second telescopic plate moves towards the stress gear. Since the driving rack meshes with the stress gear, it drives the stress gear to rotate. The bottom of the stress gear meshes with the stress rack, and the stress rack is fixed on the stress plate. The anti-slip pad at the top of the stress plate gradually rises to the outer surface of the pedal under the limitation of the limit groove. When the slope of the ship ladder frame increases, the friction between the anti-slip pad and the soles of the boarding personnel's shoes increases, improving the anti-slip performance of the pedal and ensuring the safety of boarding personnel during the boarding process. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the ship ladder assembly of the present invention; Figure 3 For the present invention Figure 2 is an enlarged schematic diagram of the structure at A in Figure 4 is a schematic diagram of the structure of the ship ladder frame of the present invention; Figure 5 is a schematic diagram of the structure of the support assembly of the present invention; Figure 6 For the present invention Figure 5 is an enlarged schematic diagram of the structure at B in Figure 7 is a schematic diagram of the structure of the anti-slip adjustment assembly of the present invention.

[0021] Main Symbol Explanation: 1. Ship ladder assembly; 101. Support and bearing frame; 102. Limit frame; 103. First sliding seat; 104. First mounting seat; 105. Ship ladder frame; 106. Rotating rod; 107. Protective guardrail; 108. Second mounting seat; 2. Lifting assembly; 201. Servo motor; 202. Transmission chain; 203. Threaded cylinder; 204. Threaded push rod; 205. Worm gear; 206. Guide rod; 207. Connecting block; 208. Lifting platform; 209. Worm; 3. Support assembly; 301. First connecting seat; 302. Mounting rod; 303. First telescopic plate; 304. Second sliding seat; 4. Anti-slip adjustment assembly; 401. Second connecting seat; 402. Connecting rod; 403. Stress gear; 404. Second telescopic plate; 405. Pedal; 406. Driving rack; 407. Limit groove; 408. Anti-slip pad; 409. Stress plate; 410. Stress rack. Detailed Embodiment

[0022] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of non-conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0023] Please combine Figures 1-7 , an anti-slip adjustment device for a boarding ladder in this embodiment includes a ladder assembly 1. The ladder assembly 1 includes a support and bearing frame 101. A limit frame 102 is fixedly installed on the outer surface of the support and bearing frame 101. A first sliding seat 103 is slidably installed on the outer surface of the limit frame 102. A ladder frame 105 is rotatably installed at the top of the first sliding seat 103. A rotating rod 106 is fixedly installed inside the ladder frame 105. A second mounting seat 108 is fixedly installed on the outer surface of the ladder frame 105. It further includes: A lifting assembly 2. The lifting assembly 2 includes a guide rod 206. A connecting block 207 is sleeved on the outer surface of the guide rod 206. A lifting platform 208 is fixedly installed on the outer surface of the connecting block 207. The lifting platform 208 is fixedly installed inside the second mounting seat 108. A support assembly 3. The support assembly 3 includes a first connecting seat 301 rotatably installed on the outer surface of the ladder frame 105. The bottom of the first connecting seat 301 is fixedly installed with a second sliding seat 304 through a first telescopic plate 303. An installation rod 302 is fixedly installed inside the first connecting seat 301. A second connecting seat 401 is fixedly installed on the outer surface of the installation rod 302. A connecting rod 402 is fixedly installed at the bottom of the second connecting seat 401. A stress gear 403 is rotatably installed inside the connecting rod 402. A second telescopic plate 404 is slidably installed inside the second connecting seat 401. An anti-slip adjustment assembly 4. The anti-slip adjustment assembly 4 includes a pedal 405 rotatably installed on the outer surface of the rotating rod 106. An anti-slip pad 408 is slidably installed inside the pedal 405.

[0024] A first mounting seat 104 is fixedly installed at the top of the first sliding seat 103. The ladder frame 105 is rotatably installed inside the first mounting seat 104. A protective guardrail 107 is fixedly installed at the top of the ladder frame 105.

[0025] A servo motor 201 is fixedly installed on the outer surface of the support and bearing frame 101. A threaded barrel 203 is rotatably installed inside the support and bearing frame 101. A threaded push rod 204 is threadedly connected inside the threaded barrel 203. The outer surface of the threaded push rod 204 is fixedly installed at the bottom of the first sliding seat 103. A worm gear 205 is fixedly installed on the outer surface of the threaded barrel 203.

[0026] According to the principle of screw drive, when the screw barrel 203 rotates, the screw push rod 204 will produce axial movement of contraction or elongation. Here, due to the rotation of the screw barrel 203, the screw push rod 204 is contracted. The bottom of the first sliding seat 103 is fixedly installed with the screw push rod 204. The first sliding seat 103 is slidably installed on the outer surface of the limit frame 102. And the ship ladder frame 105 is connected to the first sliding seat 103 through the first mounting seat 104 and can rotate. Therefore, when the screw push rod 204 contracts, the ship ladder frame 105 will, under the fixation of the first mounting seat 104, slide on the limit frame 102 towards the support and bearing frame 101 along with the first sliding seat 103.

[0027] The output end of the servo motor 201 is sleeved and engaged with a transmission chain 202. One side of the transmission chain 202 away from the servo motor 201 is sleeved on the outer surface of the screw barrel 203. The bottom of the lifting platform 208 is fixedly installed with a worm 209, and the worm 209 is meshed with a worm gear 205.

[0028] According to the principle of worm and worm gear drive, the rotation of the worm gear 205 will generate a force along the axis direction of the worm 209, causing the worm 209 to perform linear motion. The bottom of the lifting platform 208 is fixedly installed with the worm 209. And the lifting platform 208 is sleeved on the outer surface of the guide rod 206 through a connecting block 207. The guide rod 206 plays a limiting role on the connecting block 207. Therefore, when the worm 209 rises along the axis direction, the lifting platform 208 will also rise accordingly.

[0029] The bottom of the first connecting seat 301 is fixedly installed with a first telescopic plate 303. The bottom of the first telescopic plate 303 is fixedly installed with a second sliding seat 304. The second sliding seat 304 is slidably installed on the outer surface of the limit frame 102.

[0030] The inner wall of the second telescopic plate 404 is fixedly installed with a pedal 405. The pedal 405 is rotatably installed on the outer surface of the rotating rod 106. The outer surface of the pedal 405 is fixedly installed with a driving rack 406, and the driving rack 406 is meshed with a force-bearing gear 403.

[0031] Since the first connecting seat 301 is connected to the second sliding seat 304 through the first telescopic plate 303, and the second sliding seat 304 is slidably installed on the limit frame 102, and the second connecting seat 401 is connected to the first connecting seat 301, and the second connecting seat 401 is also connected to the pedal 405 through the second telescopic plate 404, under this structural connection, it can be ensured that the pedal 405 is always in a horizontal position on the outer surface of the rotating rod 106.

[0032] A limiting groove 407 is formed inside the pedal 405. An anti-slip pad 408 is slidably installed inside the limiting groove 407. A stress plate 409 is fixedly installed at the bottom of the anti-slip pad 408. A stress rack 410 is fixedly installed on the outer surface of the stress plate 409. The stress rack 410 meshes with the stress gear 403.

[0033] When the stress gear 403 rotates, it will drive the stress rack 410 to rise. The stress rack 410 is fixedly installed on the outer surface of the stress plate 409. The anti-slip pad 408 at the top of the stress plate 409 gradually rises and completely rises to the outer surface of the pedal 405 under the limitation of the limiting groove 407. After the anti-slip pad 408 rises to the outer surface of the pedal 405, the frictional force with the soles of the boarding personnel increases, so that after the slope of the ship ladder frame 105 gradually increases, the anti-slip performance of the surface of the pedal 405 can be ensured.

[0034] The implementation principle of an anti-slip adjustment device for a boarding ladder in this embodiment is as follows: When the servo motor 201 is started, it will drive the transmission chain 202 to rotate. Since the transmission chain 202 is sleeved on the outer surface of the threaded barrel 203, the threaded barrel 203 will rotate with the rotation of the transmission chain 202. A threaded push rod 204 is internally threaded in the threaded barrel 203. According to the principle of screw transmission, when the threaded barrel 203 rotates, the threaded push rod 204 will produce axial movement of contraction or elongation. Here, due to the rotation of the threaded barrel 203, the threaded push rod 204 is contracted. The threaded push rod 204 is fixedly installed at the bottom of the first sliding seat 103. The first sliding seat 103 is slidably installed on the outer surface of the limiting frame 102. And the ship ladder frame 105 is connected to the first sliding seat 103 through the first mounting seat 104 and can rotate. Therefore, when the threaded push rod 204 contracts, the ship ladder frame 105 will, under the fixation of the first mounting seat 104, slide on the limiting frame 102 towards the support and bearing frame 101 along with the first sliding seat 103.

[0035] At the same time, the worm gear 205 on the outer surface of the threaded barrel 203 meshes with the worm 209. When the servo motor 201 drives the threaded barrel 203 to rotate, the worm gear 205 also rotates accordingly. According to the principle of worm gear transmission, the rotation of the worm gear 205 will generate a force along the axis direction of the worm 209, causing the worm 209 to perform a linear motion. The worm 209 is fixedly installed at the bottom of the lifting platform 208. And the lifting platform 208 is sleeved on the outer surface of the guide rod 206 through the connecting block 207. The guide rod 206 plays a limiting role on the connecting block 207. Therefore, when the worm 209 rises along the axis direction, the lifting platform 208 will also rise accordingly.

[0036] As the ship ladder frame 105 slides towards the support and bearing frame 101, the angle between the ship ladder frame 105 and the support and bearing frame 101 gradually decreases, and the slope becomes steeper. At the same time, the angle between the ship ladder frame 105 and the first connecting seat 301 also gradually decreases. Since the first connecting seat 301 is connected to the second sliding seat 304 through the first telescopic plate 303, and the second sliding seat 304 is slidably installed on the limiting frame 102, and the second connecting seat 401 is connected to the first connecting seat 301, and the second connecting seat 401 is connected to the pedal 405 through the second telescopic plate 404, with this structural connection, it can be ensured that the pedal 405 always remains in a horizontal position on the outer surface of the rotating rod 106.

[0037] Because the angle between the ship ladder frame 105 and the first connecting seat 301 gradually decreases, the driving rack 406 on the outer surface of the second telescopic plate 404 will move towards the force-bearing gear 403. The driving rack 406 meshes with the force-bearing gear 403, so the movement of the driving rack 406 will drive the force-bearing gear 403 to rotate. The bottom of the force-bearing gear 403 meshes with the force-bearing rack 410. When the force-bearing gear 403 rotates, it will drive the force-bearing rack 410 to rise. The force-bearing rack 410 is fixedly installed on the outer surface of the force-bearing plate 409. The anti-slip pad 408 at the top of the force-bearing plate 409 gradually rises and completely rises to the outer surface of the pedal 405 under the limitation of the limiting groove 407. After the anti-slip pad 408 rises to the outer surface of the pedal 405, the friction with the soles of the boarding personnel increases, so that after the slope of the ship ladder frame 105 gradually increases, the anti-slip performance of the surface of the pedal 405 can be ensured.

[0038] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. An anti-slip adjustment device for a boarding ladder, comprising a ladder assembly, the ladder assembly including a support carrier, a limiting frame fixedly installed on the outer surface of the support carrier, a first sliding seat slidably installed on the outer surface of the limiting frame, a ladder frame rotatably installed on the top of the first sliding seat, a rotating rod fixedly installed inside the ladder frame, and a second mounting seat fixedly installed on the outer surface of the ladder frame, characterized in that, It further includes: a lifting assembly, the lifting assembly includes a guide rod, a connecting block is sleeved on the outer surface of the guide rod, a lifting platform is fixedly installed on the outer surface of the connecting block, and the lifting platform is fixedly installed inside the second mounting seat; a support assembly, the support assembly includes a first connecting seat rotatably installed on the outer surface of the ship ladder frame, a second sliding seat is fixedly installed at the bottom of the first connecting seat through a first telescopic plate, a mounting rod is fixedly installed inside the first connecting seat, a second connecting seat is fixedly installed on the outer surface of the mounting rod, a connecting rod is fixedly installed at the bottom of the second connecting seat, a stress gear is rotatably installed inside the connecting rod, and a second telescopic plate is slidably installed inside the second connecting seat; a non-slip adjusting assembly, the non-slip adjusting assembly includes a pedal rotatably installed on the outer surface of a rotating rod, and a non-slip pad is slidably installed inside the pedal.

2. The anti-slip adjustment device for a boarding ladder according to claim 1, characterized in that: A first mounting seat is fixedly installed at the top of the first sliding seat, a ship ladder frame is rotatably installed inside the first mounting seat, and a protective guardrail is fixedly installed at the top of the ship ladder frame.

3. The anti-slip adjustment device for boarding ladder according to claim 1, characterized in that: A servo motor is fixedly installed on the outer surface of the support and bearing frame, a threaded cylinder is rotatably installed inside the support and bearing frame, a threaded push rod is threadedly connected inside the threaded cylinder, the outer surface of the threaded push rod is fixedly installed at the bottom of the first sliding seat, and a worm gear is fixedly installed on the outer surface of the threaded cylinder.

4. The anti-slip adjustment device for a boarding ladder according to claim 3, wherein: The output end of the servo motor is sleeved and engaged with a transmission chain, the transmission chain is sleeved on the outer surface of the threaded cylinder on the side away from the servo motor, a worm is fixedly installed at the bottom of the lifting platform, and the worm is engaged with the worm gear.

5. The anti-slip adjustment device for a boarding ladder according to claim 1, characterized in that: A first telescopic plate is fixedly installed at the bottom of the first connecting seat, a second sliding seat is fixedly installed at the bottom of the first telescopic plate, and the second sliding seat is slidably installed on the outer surface of the limiting frame.

6. The anti-slip adjustment device for a boarding ladder according to claim 1, characterized in that: A pedal is fixedly installed on the inner wall of the second telescopic plate, the pedal is rotatably installed on the outer surface of the rotating rod, a driving rack is fixedly installed on the outer surface of the pedal, and the driving rack is engaged with the stress gear.

7. The anti-slip adjustment device for a boarding ladder according to claim 6, characterized in that: A limiting groove is formed inside the pedal, a non-slip pad is slidably installed inside the limiting groove, a stress plate is fixedly installed at the bottom of the non-slip pad, and a stress rack is fixedly installed on the outer surface of the stress plate, and the stress rack is engaged with the stress gear.

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